78513159 has 16 divisors (see below), whose sum is σ = 105840000. Its totient is φ = 51768096.

The previous prime is 78513133. The next prime is 78513181. The reversal of 78513159 is 95131587.

It is not a de Polignac number, because 78513159 - 2¹² = 78509063 is a prime.

It is a super-2 number, since 2×78513159² = 12328632272318562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78513059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157092 + ... + 157590.

It is an arithmetic number, because the mean of its divisors is an integer number (6615000).

Almost surely, 2^78513159 is an apocalyptic number.

78513159 is a deficient number, since it is larger than the sum of its proper divisors (27326841).

78513159 is a wasteful number, since it uses less digits than its factorization.

78513159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its digits is 37800, while the sum is 39.

The square root of 78513159 is about 8860.7651475479. The cubic root of 78513159 is about 428.2008094145.

The spelling of 78513159 in words is "seventy-eight million, five hundred thirteen thousand, one hundred fifty-nine".